Pretty cool! I don’t geek out on electronics often, but anywhere you can save money is a plus.
I like to use the meanwell drivers. There are some cheaper options, but when you get into the bigger models the cheap ones usually don’t compare in efficiency.
All of the led’s I’m familiar with will change their resistance as heat goes up, the voltage drop across each will follow suit.
As far as what you’re asking, I’m not really sure if it would work or not. The cobs do have strings of individual diodes in series/parallel configuration. And thermal runaway is always a concern, also the reason we always try to wire in series. Parallel is a good option under certain conditions, but ALWAYS install some overcurrent protection. As far as what you’re suggesting, not sure man. You’ll be talking about a pretty good load, and I’d hate to see what would happen if it didn’t work.
I wouldn’t ever recommend someone without fairly extensive electrical background wire in parallel. There’s just to much at risk for me to judge if things are good or not by a picture. But that’s just me.
The meanwell 200 watt drivers are like $50. For what you’d have in trying to make something else work, I’d probably spend the cash just for piece of mind.
Also, the Vero Gen 7 is available in b,c, and d versions. All of which have different voltage configuration. If that helps you out any.